Re: Lg 50pk750
Dick got it right. It was the control board. $20 later and it's working. Thanks!
hpservertech
Member
Last Activity: 03-21-2020, 01:34 PM
Joined: 03-10-2020
Location: St. Louis
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Re: Samsung PN50B450B1D Fixed
would be helpful to know what that problem was that you fixed with this.Leave a comment:
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Re: Lg 50pk750
D1 is definately not flashing or lit up.
Get no test pattern with 51/52 jumpered and p31 disconnected.
Checked the ones you pointed out and they call came back at 0...Leave a comment:
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Re: Lg 50pk750
I'm an idiot. Had the meter on ac. Updating voltages. The voltages are correct for the P813 connector. Sorry about all that.
Measured across resister
vsc - 192
vy - 151
measured from + side to ground
vs f103 - 60
vs f101 - 5Leave a comment:
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Re: Lg 50pk750
Chassis ground. also used the ground point on that connector, same voltagesLeave a comment:
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Re: Lg 50pk750
See what you are saying on sus board.
vsc - 0
vsy - fluctuates 32-33v
vs fs103 - 132v (should be 125v)
vs fs101 - 10v (should be 125v)Leave a comment:
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Re: Lg 50pk750
fuses all test good.
VS & VA match the sticker 60v & 203vLeave a comment:
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Re: Lg 50pk750
Went ahead and added the other pictures as well....Leave a comment:
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Re: Lg 50pk750
D1 is not flashing
Also on the power supply I checked the voltage for P813. I dont think these are correct readings. This is with the TV on.
Attached pictures...Leave a comment:
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Re: Lg 50pk750
yes. VA & VS & m5v all match the PS board and both sus boards.Leave a comment:
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Re: Lg 50pk750
Anyone have any thoughts?Leave a comment:
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Lg 50pk750
Evening all.
Have an LG 50PK750 that turns on, has sound but no video. Previous owner tried to do a repair on the power supply board, but did a horrible job (burned through traces, unsoldered some smds as well) so I got a replacement. New board in and the same issue.
VA - 60
VS - 204
jumpered 51 & 52 on the main board and removed the p31 cable. No test patterns.
From searching it seems that most that have similar issue they do get test patterns which means the main board is bad, but I haven't found anything that helps me figure... -
Re: New Members - please post your introductions here
New member, fixing lots of tv's lately thoughLeave a comment:
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